Scholarship Interview

My son was awarded the highest merit scholarship based on academic record for a small LAC. He has been invited to interview for an additional award which would essentially give him a full tuition scholarship.

Unfortunately the interview date is when he will be abroad presenting his research at a conference. The school is out of state so we can’t make flights work.

They are very willing to do a phone a interview. Any tips on scholarship interviews? This is his first one. Any advice or guidance would be appreciated. Thank you.